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Finding the Fourth Proportional to 8,464.50, 11,679.39 and 5,479.92

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Solution

The fourth proportional to 8,464.50, 11,679.39 and 5,479.92 is: 7,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,464.50 : 11,679.39 = 5,479.92 : x
  2. Step 2: Convert to fraction form
    8,464.50/11,679.39 = 5,479.92/x
  3. Step 3: Cross multiply
    8,464.50x = 11,679.39 × 5,479.92
  4. Step 4: Simplify right side
    8,464.50x = 64,002,122.85
  5. Step 5: Solve for x
    x = 64,002,122.85/8,464.50
  6. Step 6: Final answer
    x = 7,561.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.